Add 10/84 and 18/72
10/84 + 18/72 is 31/84.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 84 and 72 is 504
Next, find the equivalent fraction of both fractional numbers with denominator 504 - For the 1st fraction, since 84 × 6 = 504,
10/84 = 10 × 6/84 × 6 = 60/504 - Likewise, for the 2nd fraction, since 72 × 7 = 504,
18/72 = 18 × 7/72 × 7 = 126/504 - Add the two like fractions:
60/504 + 126/504 = 60 + 126/504 = 186/504 - 186/504 simplified gives 31/84
- So, 10/84 + 18/72 = 31/84
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 20/84+18/72 10/84+36/72 30/84+18/72 10/84+54/72 50/84+18/72 10/84+90/72 70/84+18/72